TFT master substrate for LCD panels and method for fabricating the same
a technology of lcd panels and master substrates, applied in non-linear optics, instruments, optics, etc., can solve the problems of odf process manufacturing difficulties, lag between detection of defects and correction of problems, and normal low yield ra
Inactive Publication Date: 2008-01-03
INNOLUX CORP
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Benefits of technology
This patent describes a method for making a liquid crystal display panel. The method involves creating a thin film transistor (TFT) substrate with first detection areas and a second detection area, and then adding metal lines and driving circuits to the substrate. The substrate is then combined with color filter substrates to create the display panel. The panel is then inspected and tested, and if it passes, it is cut into individual panels. The technical effect of this method is to improve the accuracy and efficiency of liquid crystal display panels.
Problems solved by technology
However, there are certain manufacturing difficulties involved in the ODF process.
As a result, the yield rate is normally rather low.
However, there is a time lag between detection of the defect and correction of the problem at the workstation.
Method used
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[0026]Referring to FIG. 1, this a schematic, exploded, isometric view of a liquid crystal display (LCD) panel set according to a preferred embodiment of the present invention. The LCD panel set 2 includes a TFT master substrate 21, a plurality of CF substrates 23, a plurality of LC layers 25, and a plurality of sealants 27. Each of the LC layers 25 and a corresponding one of the sealants 27 are set individually on each of TFT substrate units (not labeled) of the TFT master substrate 21. Additionally, each of the CF substrates 23 is set corresponding to a respective one of the LC layers 25 and a respective one of the sealants 27. The LC layers 25 are interposed between the TFT substrate units of the TFT master substrate 21 and the corresponding CF substrates 23 respectively, and are hermetically sealed by the sealants 27 respectively.
[0027]Referring to FIG. 2, this is a schematic, abbreviated, top plan view of the TFT master substrate 21. When a plurality of finished LCD panels (not ...
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Abstract
An exemplary thin film transistor master substrate for a liquid crystal display panel includes a plurality of display areas, a plurality of first detection areas set corresponding to the display areas and a second detection area set at a periphery of the thin film transistor master substrate. Each of the first detection areas is electrically coupled to the corresponding display areas and the first detection areas are coupled in parallel to the second detection area.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to liquid crystal panels of liquid crystal displays (LCDs) that are mass produced, and more particularly to a detection technique utilized in the manufacture of LCD panels.[0003]2. General Background[0004]Liquid crystal displays (LCDs) generally have advantages of lightness in weight, a thin profile, flexible sizing, and low power consumption. For these reasons, LCDs are widely used in products such as laptops, personal digital assistants, mobile phones, and so on. Such kinds of products are referred to herein as LCD devices. Generally, an LCD panel is a key component of an LCD device. The major components of a typical LCD panel include two substrates, and a liquid crystal (LC) layer interposed between the substrates. During the process of manufacturing LCD devices, there are usually four major steps involved. These steps are the manufacture of thin film transistor (TFT) array substrates, the manuf...
Claims
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IPC IPC(8): G02F1/1333G02F1/1343
CPCG02F1/133351G02F1/1309
Inventor LIN, SHIH-YAOKUO, MING-YAO
Owner INNOLUX CORP